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piranha

American  
[pi-rah-nuh, -ra-, -nyuh] / pɪˈrɑ nə, -ˈræ-, -njə /

noun

piranhas, plural piranha plural
  1. any of several small South American freshwater fishes of the genus Serrasalmus that eat other fish and sometimes plants but occasionally also attack humans and other large animals that enter the water.


piranha British  
/ pɪˈrɑːnjə /

noun

  1. any of various small freshwater voracious fishes of the genus Serrasalmus and related genera, of tropical America, having strong jaws and sharp teeth: family Characidae (characins)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of piranha

1865–70; < Portuguese < Tupi

Explanation

A piranha is a fish with famously sharp teeth. Don't go swimming in certain South American rivers if you want to avoid piranhas! These freshwater fish are terrifyingly described as "voraciously carnivorous," meaning they eat meat with great enthusiasm. Humans aren't often bitten by piranhas, but it does happen in some parts of South America. You also can't buy a piranha as a pet in many parts of the world — and if you do, it's best not to get two of them, since the weaker fish is often killed by the stronger one.

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Vocabulary lists containing piranha

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

They caught piranha, wolf fish, sting ray, which they ate along with adventure food rations, and drank water from the river.

From BBC Oct. 11, 2024

Directed by Pierre Perifel, “The Bad Guys” centers on a band of former criminals — a wolf, a piranha, a snake, a tarantula and a shark — on a mission to improve their villainous reputations.

From Los Angeles Times Apr. 24, 2022

White once said her character Sue Ann Nivens in “The Mary Tyler Moore Show” could be “icky-sweet” but was “really a piranha type.”

From Washington Times Dec. 31, 2021

It becomes a big floaty bullfight, or — with enough players — a piranha feeding frenzy.

From The Verge Oct. 14, 2021

Mary Lou grabbed the ropes that had held her to Tane over the piranha tank.

From "Beauty Queens" by Libba Bray

His latest work follows images that have popped up each morning since 5 August across London of a goat, elephants, monkeys, a wolf, pelicans, a cat, piranhas and a rhinoceros.

From BBC Aug. 13, 2024

Despite their size, swarms of these insects can cause considerable damage by shredding plant life to bits like ravenous piranhas..

From Salon Feb. 26, 2024

Known as vegetarian piranhas, pacu can reach up to 1 meter long.

From Science Magazine Jan. 4, 2023

A black bear, a tortoise, meerkats, otters, elephants, hogs, hippos, jaguars, cassowaries, snow leopards, flamingos, piranhas, peccaries and howler monkeys.

From Los Angeles Times Oct. 7, 2021

Thus, the experience of suddenly being thrust into a crowd of boys was like being dumped into a pool of piranhas.

From "The House of the Scorpion" by Nancy Farmer

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